/*
 * Tencent is pleased to support the open source community by making Angel available.
 *
 * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in 
 * compliance with the License. You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/Apache-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 *
 */


package com.tencent.angel.webapp.page;

import com.google.inject.Inject;
import com.google.protobuf.ServiceException;
import com.tencent.angel.exception.UnvalidIdStrException;
import com.tencent.angel.master.app.AMContext;
import com.tencent.angel.master.client.WorkerClient;
import com.tencent.angel.worker.WorkerAttemptId;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.yarn.webapp.view.HtmlBlock;

import java.io.IOException;

import static com.tencent.angel.webapp.AngelParams.WORKER_ATTEMPT_ID;
import static org.apache.hadoop.yarn.util.StringHelper.join;

public class WorkerThreadStackBlock extends HtmlBlock {
  final AMContext amContext;
  private static final Log LOG = LogFactory.getLog(ParameterServerThreadStackBlock.class);

  @Inject WorkerThreadStackBlock(AMContext amctx) {
    amContext = amctx;
    amContext.getParameterServerManager();
  }

  @Override protected void render(Block html) {
    set(TITLE, join("Angel WorkerThreadStack ", $(WORKER_ATTEMPT_ID)));

    try {
      WorkerAttemptId workerAttemptId = new WorkerAttemptId($(WORKER_ATTEMPT_ID));
      WorkerClient workerClient = null;
      LOG.info("start init WorkerClient");
      workerClient = new WorkerClient(amContext, workerAttemptId);
      String info = workerClient.getThreadStack();
      html.pre()._(info)._();
    } catch (IOException | UnvalidIdStrException | ServiceException e) {
      LOG.error("get stack for " + $(WORKER_ATTEMPT_ID) + " failed, ", e);
    }
  }
}
